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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#618632#8790. First Billionucup-team134#TL 42ms4256kbC++171.3kb2024-10-07 01:01:172024-10-07 01:01:17

Judging History

你现在查看的是最新测评结果

  • [2024-10-07 01:01:17]
  • 评测
  • 测评结果:TL
  • 用时:42ms
  • 内存:4256kb
  • [2024-10-07 01:01:17]
  • 提交

answer

#include <bits/stdc++.h>

#define ll long long
#define pb push_back
#define f first
#define s second
#define sz(x) (int)(x).size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define ios ios_base::sync_with_stdio(false);cin.tie(NULL)
#define ld long double
#define li __int128

using namespace std;

mt19937 rng(time(NULL));
const int N=1e9;
double r(){
	return (double)(rng()%N)/N;
}
double p(int ol,int ne,double temp){
	if(ne<ol)return 1.0;
	return exp((ol-ne)/temp);
}

int main()
{
	int n;
	scanf("%i",&n);
	vector<bool> in(n);
	int sm=0;
	vector<int> c(n);
	for(int i=0;i<n;i++){
		scanf("%i",&c[i]);
	}
	while(1){
		fill(all(in),0);
		sm=0;
		for(int i=0;i<n/2;i++){
			int x=rng()%n;
			while(in[x])x=rng()%n;
			in[x]=1;
			sm+=c[x];
		}
		double temp=1e9,an=0.99999;
		int treba=1e9;
		while(1){
			int a=rng()%n;
			while(!in[a])a=rng()%n;
			int b=rng()%n;
			while(in[b])b=rng()%n;
			int ns=sm-c[a]+c[b];
			double x=p(abs(treba-sm),abs(treba-ns),temp);
			if(r()<=x){
				in[a]=0;
				in[b]=1;
				sm=ns;
			}
			if(ns==treba){
				printf("%i",n/2);
				for(int i=0;i<n;i++){
					if(in[i]){
						printf(" %i",i+1);
					}
				}
				printf("\n");
				return 0;
			}
			temp=temp*an;
			if(temp<1e-8)break;
		}
	}
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 4012kb

input:

10
386413329 88494216 245947398 316438989 192751270 204627269 65749456 3938400 150458676 345180997

output:

5 1 5 6 7 9

result:

ok OK (n = 10)

Test #2:

score: 0
Accepted
time: 0ms
memory: 4128kb

input:

10
119486233 299942886 169540407 349937991 597883752 32230162 140514533 57341098 12602102 220520836

output:

5 2 5 6 8 9

result:

ok OK (n = 10)

Test #3:

score: 0
Accepted
time: 0ms
memory: 4012kb

input:

14
384615281 84612238 83310504 54746763 142296081 56775470 128760350 343006424 177232390 214368720 67220468 21895072 16352717 224807522

output:

7 1 6 7 9 10 12 13

result:

ok OK (n = 14)

Test #4:

score: 0
Accepted
time: 1ms
memory: 4256kb

input:

14
270208635 14270307 89661499 113578022 47687195 101043954 38775146 208193324 650676076 351701957 3427619 59535626 24230888 27009752

output:

7 1 2 3 4 6 10 12

result:

ok OK (n = 14)

Test #5:

score: 0
Accepted
time: 14ms
memory: 4124kb

input:

20
61638928 106712373 5946815 178135484 4937573 111395400 15504655 67139983 101814514 312223647 130341028 43244171 37671364 54108486 337181317 37924824 153793862 70383750 102917244 66984582

output:

10 1 2 3 6 7 15 16 17 19 20

result:

ok OK (n = 20)

Test #6:

score: 0
Accepted
time: 2ms
memory: 3956kb

input:

20
67858098 61231428 99398662 1883806 82465954 303619377 87516412 154956240 94872199 76508350 13276828 136541811 203282099 99160366 127539385 13364660 141176136 39751629 67888657 127707903

output:

10 1 3 4 5 8 11 12 13 14 17

result:

ok OK (n = 20)

Test #7:

score: 0
Accepted
time: 42ms
memory: 4256kb

input:

24
17125795 281143405 10375259 196293002 158174864 34520650 52919232 87393970 99085271 62281508 67168428 55174991 54533464 51393059 89276370 41441658 72793517 30466999 73758332 97064918 111541434 142047546 12934221 101092107

output:

12 3 4 5 10 13 15 17 18 19 20 22 23

result:

ok OK (n = 24)

Test #8:

score: 0
Accepted
time: 26ms
memory: 4184kb

input:

24
70224368 148769600 36654748 23404220 15009825 57449487 46896672 6065662 10377031 133719710 23220853 184445684 8462667 88501546 155244839 229323557 140109402 52520271 78995771 75721556 87987586 118427778 107013825 101453342

output:

12 2 4 6 8 9 13 14 15 16 18 22 24

result:

ok OK (n = 24)

Test #9:

score: -100
Time Limit Exceeded

input:

28
122321206 60841271 22767116 183943582 6247754 32767541 19129802 21313874 144503909 59360441 12259051 19044256 50267333 25766572 133411289 32253746 102412217 46186594 55413161 39907615 52325783 86862071 185310732 138228874 22000146 149813853 98156445 77183766

output:


result: